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jok3333 [9.3K]
3 years ago
13

What is extraneous roots?

Mathematics
1 answer:
kobusy [5.1K]3 years ago
7 0

extraneous root is a solution o an equation that seems to be  right but when we check it (by substituting it into the original equation) it turns out not to be right


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The ratio of black marbles to red marbles is 3:2. If there are a total of 25 marbles in a bag,
kumpel [21]

Answer:

15 black marbles

Step-by-step explanation:

So its. A ratio (basically a fraction)

3/2

we add them up so we know how much marbles but not which kind

so we get 5

now we know for every 5 batches there is 3 black and 2 red

so we divide 25/5 to get 5

now we know there are 5, 5 batches of black ad red marbles.

now black is 3 of them so we multiply 5(3) which is 15

Now red is 2 of them so we multiply 5(2). Which is 10

now to check, if we add them up, they equal to 25 which is correct.

basically add the fraction, divide that by the original number, time the quotient by each number in the fraction.

8 0
3 years ago
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Which expressions are polynomials? Select each correct answer. 1)Which expressions are polynomials?
ZanzabumX [31]

Answer:

35x^2 is a polynomial because it is a whole # and x is the product of the term, it also has a variable.

the other answer is x/5+2



6 0
3 years ago
Read 2 more answers
one of the solutions to x2 − 2x − 15 = 0 is x = −3. what is the other solution? x = −5 x = −1 x = 1 x = 5
Goryan [66]
x^{2} -2x-15=0
P(-15)
s(-2)
x^{2} -5x+3x-15
=x(x-5)+3(x-5)
=(x+3)(x-5)
x=5
3 0
3 years ago
Where did we get one?
77julia77 [94]

Answer:

The -1 came from factoring.

The equation is multiplied by 8 because 8 could be pulled from 16x-8.

16 can be divided by 8 2 times and 8 can only divided by 8 once.

so factoring it makes the equation 8(2x-1)

5 0
2 years ago
NEED HELP ASAP!!!! Okay, I have 5 proportional relationship questions, PLEASE HELP:
Natasha_Volkova [10]

Answer:

The temperature yesterday was -6 because 7-13 is -6.

Step-by-step explanation:


8 0
3 years ago
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